Heater.



No. 798,454. PATBNTED AUG. 29, 1905.

s. G. SCANLAN.

HEATER.

APPLICATION FILED APR.15, 1903.

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SAM GWYN SCANLAN, OF CHICAGO, ILLINOIS.

HEATER.

Specification of Letters Patent.

Fatented Aug. 29, 1905.

Application iiled April 15, 1903. Serial No. 152,749.

To all whom it may concern: l

Be it known that I, SAM GWYN SGANLAN, a citizen of the United States, residing in the city of Chicago, county of Cook, and State of Illinois, have invented a new and useful Improvement in Heaters for Surgical and other Purposes, of which the following is a specification.

My invention relates to heaters for the use of surgeons and others requiring sterilized Water, either cold or heated, and the purpose of my invention is to provide means for storing water or other liquid in such a manner that it may be readily accessible to the operator and withdrawn at a high or low temperature at will.

My invention also contemplates the convenient and thorough sterilization of the water when the same is introduced into the containing vessel in an unsterile condition.

These objects are attained by the mechanism illustrated in the accompanying drawings, in which- Figure l is a general side view of the complete device, and Fig. 2 is acentral vertical sectional view of the tank and connected parts.

Similar letters refer to similar parts thro ughout both views.

The vessel a consists, preferably, of a cylindrical metallic tank arranged in a vertical position and is supported upon the stand b. It is desirable that the tank be removable from said stand, and to this end the latter comprises the bottom ring b' and at a point higher up the ring b2, the rings being held in proper relation bymeans of the uprights b3. Said rings. are both adapted to prevent lateral displacement of the tank; but the said bottom ring also forms the support for the same, making contact therewith chiefly at the periphery thereof, so as to leave the bottom of the tank exposed. The legs b4 of said stand are constructed to maintain the bottom of the tank at a suitable elevation from the floor or other supporting structure. With the exception of certain apertures hereinafter described said tank a is air and liquid tight, and at a convenient point, preferably in the top thereof, is the nipple or other pipe-coupling c, through which air or other gas under pressure may be introduced into said tank. vThis is accomplished by means of a pump d, connected with said coupling c through the hose d. In order that the gas entering said tank may be free from impurities, a filter e is placed in said hose, and for preventing the escape of gas from said tank after introduction the shut-o valve e is provided. The tank is provided with a filler-cap e2, through which water may be introduced. By preference said cap is screw-threaded, so as to insure a tight joint and at the same time be readily removable. A coupling f is also located in the top of said tank to form a connection for the hose f'. Said hose may be furnished with any of the known suitable devices for controlling the escape of the gas from said tank. The column g is mounted on said tank c and forms a support for the frame It, wherein the basin h and tray h2 rest. Said column also carries the discharge-pipe z' and valve or faucet i. By preference said column has the central vertical passage 2, which forms the connecting-duct between said pipe c' and the leader-pipe j.

On the side of tank a at a point intermediate of the height thereof is the valveeasing 7c, which is provided with three apertures 7c 7a2 7c3. Said aperture 7c connects with the pipe j. lSaid aperture la? connects with the interior of said tank, and said aperture 7a3 connects with the pipe m, which forms the upper extremity of the pipe-coil m. The valve n in said casing is constructed so as to form, in connection with the casing k, what may be termed a three-way cock, said valve having the straight central duct n' extending completely through said valve and the side duct n2 leading laterally from said ductn. rIhe parts are so arranged that when duct n is in one rotated position, as shown in Fig. 2, the pipe m is in communication with the pipe y' only. When said valve is in a second rotated position, pipe m is in communication with the tanka only, and when said valve is in a third rotated position said tank is in communication with the pipe j only.

rIhe pipe-coil above mentioned is located beneath the tank in close proximity thereto, and the extremity m2 of said coil connects with and leads from the interior of said tank a at the bottom thereof. The burner o is mounted in the stand b beneath the coil m', so as to heat the same. The said burner is by preference adapted for the combustion of gas, which may be supplied thereto through the coupling 0'; but other means of heating the coil may be substituted.

In operation the tank is first lpartially lled with raw water, and subsequently air is forced into the space between the surface of the water and the top of the tank by means of the force-pump d. The purpose in thus IOO IIO

introducing air under pressure into the tank is to enable the water to be forced out through the discharge-pipe 't when the faucet z 1s opened. As the air from the pump Z passes through the iilter e all impurities in the air are prevented from entering the tank. When the air-pressure within the tank is deemed suiicient, the valve e is closed, and, if desired, the pump Z may be removed. If it is not necessary that the water be sterilized, said water may be immediately drawn off by rotating the valve n in the three-way cock to the position in which the passage n in said valve communicates with the passage L2 of the valve-casing and thev passages a2 with the pipe j. As said valve-casing is located at a point above the bottom of the tank, the water thus drawn off may have had an opportunity to settle and the sediment will be below said valve-casing, and therefore will not enter the same. lf, however, sediment has previously become deposited in the coil m below the tank, the same may be cleaned out by rotating the valve n to the position shown in Fig. 2, in which the passage m2 connects the pipe m with the pipe y'. Vhen the valve is in this position, the water can escape only through said pipes m and j, and the rush of water therethrough will carry the sediment up through the pipe t'. If it is desired that the water within the tank be rendered sterilized, the burner o is put in operation and raises the temperature of the water in the coil m; and the valve n is rotated to such a position that the discharge 71,2 connects with the pipe m and the discharge n in said valve connects with the discharge 7a2 in the valvecasing. When said valve is in this position, the communication with the pipe 7' is cut ofi:1 and the pipe m communicates with the interior of the tank through the aperture fr. Under these lastnamed conditions as the water in the coil m is heated it tends to rise and passes through-pipe m and aperture int-o the interior of the tank. This induces a circulation between the coil and the tank, and by continuing the heating process the water within the tank may be boiled until sterilization is complete. If the cold, raw, or unsterilized water first introduced into the tank is wanted for immediate use, but it is required that the same shall be hot, the burner o is lighted and the valve n' rotated to the position shownin Fig. 2. If under these conditions the faucet c" is turned on part way, sothat the discharge of the water through pipe z' shall be comparatively slow, the water coming through said pipe will be heated and the temperature to which the discharged water will be raised will be dependent upon the heating capacity of the burner and the rapidity with which the water is drawn off. With a good burner ei'ective over substantially the entire surface of the coil, as is contemplated in my device, the water may be even raised to a boiling-point during its passage through the coil '1rd, and subsequently become sterile. or substantially so, as it is discharged through said pipe It will be noted that under these last conditions the temperature of the body of water in the tank remains substantially unchanged and the heating is applied only to the water which is drawn o. Herein lies one of the advantageous features of my meel anism, for by this construction it is not necessai-y to await the heating of the entire mass of water; but only such of the water is heated as may be momentarily required. If in thus drawing off the water through the hot coil m' and discharging it into basin k2, for example, the operator linds the temperature of the discharged water to be too great, he may cool it by rotating the valve n to such a position that the communication with the pipe m is cut off and the pipe j is connected directly with the tank through the discharge 7112. Cool water may thus be drawn 0E from the tank until the mixture in basin 7b2 is at the desired temperature. In other words, by use of my invention it is, practically speaking, possible to draw off hot and cold water from the same tank.

Although I have shown and described certain appliances which would Linder ordinary circumstances be useful in connection with the heater, these may be varied in form or arrangement or entirely omitted withoutdeparting from the spirit of my invention. For eX- ample, the method of supporting the tank is non-essential, and so, also, is the means by which air is forced into the tank. It is also within my conception that the frame L, basin L, and tray may be varied or eliminated, if desired.

I hereby direct attention to another application for Letters Patent on heaters, filed by me in `the'United States Patent Oflice July 6, 1903, Serial No. 164,438, issued November 10, 1903, as Patent No. 743,571.

What I claim as new, and desire to secure by Letters Patent, is-

l. In a device of the class described in combination with a tank having means for admitting liquid to it; a burner located below said tank, a heating-coil adapted to be heated by said burner and connected .to the tank at substantially the bottom of the liquid-chamber of the tank, the heating-coil and burner being so proportioned in size to each other that liquid passing once through the coil will be heated hot by the burner, a discharge-pipe connected to the heating-coil, a three-way cock in the discharge-pipe, having an independent connection with the tank at a point above the entrance-point of the heating-coil and below the normal level of the liquid in the tank, the valve of said three-way cock being so located that it may be turned; to discharge water di- IOO IIO

rectly from the heating-coil; to discharge waterfrom the heating-coil back into thevtank;

or to discharge Water directly from the tank through the upper connection of the threeway cock, and means Jfor exerting pressure upon the top of the liquid Within the tank.

2. In a device of the class described in cornbination with atank having means for admitting liquid to it; a burner located below said tank, a heating-coil adapted to be heated by said burner and connected to the tank at substantially the bottom of the liquid-chamber of the tank, the heating-coil and burner being so proportioned in size to each other that liquid passing once through the coil will be heated hot by the burner, a discharge-pipe connected to the heating-coil, a three-Way cock in the discharge-pipe, having an independent connection With the tank at a point above the entrance-point of the heating-coil and below the normal level of the liquid in the tank, the valve of said three-Way cock being so located that it may be turned; to discharge Water directly from the heating-coil; to discharge Water from the heating-coil back into the tank; or to discharge water directly from the tank through the upper connection of the three- Way cock, and means for exerting pressure upon the top of the liquid Within the tank, all the parts being arranged and disposed substantially as shown and described for the purposes set forth.

SAM GWYN SGANLAN. Witnesses:

JULIA M. BRISTOL, HOWARD M. Cox. 

